Fix issue where container IP is occasionally empty for Kubernetes pods in HostNetwork mode #1280
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yyuuttaaoo
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…s in HostNetwork mode (#1280) This patch addresses a problem where the hostname specified in the hostname file does not match the entry in the etc-hosts file when using Kubernetes HostNetwork mode. The mismatch leads to scenarios where the container IP is retrieved as empty. To resolve this issue, the fix implements a check to compare the container's hostname against the daemon's hostname when HostNetwork mode is enabled. If they are identical, the container will inherit the daemon's IP address, ensuring consistency and preventing the container's IP from being empty. This adjustment ensures reliable IP address assignment and mitigates the risk of networking issues within the Kubernetes cluster.
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BUG:
The following PNG shows the hosts file and hostname file not mapping in the pod host network condition. So the container IP in the docker center would be empty.
FIX:
Use the local hostname as the default value to mapping the previous condition, to avoid the case.